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JPL Small-Body Database Browser
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91740 (1999 TX177)
Classification: Main-belt Asteroid          SPK-ID: 2091740
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .116050972616949 6.0153e-08  
a 3.142998087856308 3.0734e-08 au
q 2.778250102827372 1.962e-07 au
i 4.735953633893351 7.0385e-06 deg
node 189.1045132103324 5.704e-05 deg
peri 201.8175267093982 6.1619e-05 deg
M 268.2082739229751 2.5367e-05 deg
tp 2459519.438196104857
(2021-Oct-31.93819610)
0.00014736 TDB
period 2035.235184933603
5.57
2.9852e-05
8.173e-08
d
yr
n .1768837344524115 2.5945e-09 deg/d
Q 3.507746072885243 3.43e-08 au
  Orbit Determination Parameters
   # obs. used (total)      518  
   data-arc span      9369 days (25.65 yr)  
   first obs. used      1993-09-15  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58337  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:33  

Additional Information
 Earth MOID = 1.78426 au 
 Jupiter MOID = 1.92935 au 
 T_jup = 3.194 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO436413  
diameter diameter 5.262 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.87 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.077   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91740 (1999 TX177)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TX177 = 1993 RF18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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